Auxiliary spacing device for type-writing machines.



No. 679,0l3. I Patented July 23, |901..

e. P. BLEsslue. AUXILIABY SPACING DEVICE FUR TYPE WRITING MACHINES.

(Application ledvct. 13, 1900.)

2 Sheets-Sheet l.

(No Model.)

No. 679,0I3. vPatented Iuly 23, |90l.l

G. P. BLESSING. AUXILIABY SPACING DEVICE FUR TYPE WRITING MACHINES.

(Applicqton led Oct. 13, 1900.)

(No Model.) 2 Sheets -Sheet 2,

UNITED` STATES PATENT OFFICE.

GAY F. BLEssiNG, AoF NEw MILFoRD, PENNSYLVANIA, AssicNoE. oF ONEy HALFTo FRANK N. e1LLEsF1E,.oF SAME PLACE.

AUXlLlARY SPACING DEVICEFOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 679,013, dated July 23,1901. Application filed October 13, `1900. Serial No. 32,952. (Nomodel.)

To @ZZ whom t may concern.-

Beit known that I, GAY P. BLESSING, a citizen of the United States, anda resident of New Milford, in the county of SusquehannaJ A and State ofPennsylvania, have invented a new and Improved Auxiliary Spacing Devicefor Type-Writing Machines, of which the following is a full, clear, andexact description. One purpose of the invention is to provide 1o anauxiliary or corrective spacing device for type-writing machines soconstructedthat the direction of the carriage of the machine maybereversed at anytime to the extent of one or more points to enable anoperator to correct a misspelled word or a letter or charactererroneously struck or to make an insertion.

Afurther purpose of the invention is to construct a device of thecharacter mentioned 2o which may be adapted to any standard typewritingmachine and when not in actual operation will in no manner interferewith the usual movement of the carriage.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

3o in which similar characters of reference indicate corresponding partsin all the figures.

' Figure 1 is a perspective view of the improved device applied toaSmith-Premier machine. Fig. 2 is an enlarged front elevation of thedevice in inactive position, the dog being shown in dotted lines in itsfirst active position. Fig. 3 is a partial front elevation of thedevice, a part being broken away, the dog being shown in itsfulloperative position.

4o Fig. 4 is a plan view of the body portion of.

the improved device. Fig. 5 is a front elevation of the device, showingthe manner of assembling some of its parts. Fig. 6 is a plan view of thebase portion of the frame; and

Figs. 7, 8, 9, and 10 are views of parts, showing details ofconstruction.

A represents the upper portion of the frame of a Smith-Premier machine,B the scale-bar of the machine, and C the scale. At each 5o end of thescale C a bracket 10 is secured to the upper front edge of the scale barB. These brackets extend forward and down ward, and their lower orperpendicular members are attached in any suitable or approved manner tothe ends of a rack 11, or the rack l1 may be secured to the carriage inany suitable manner. The body portion of the device consists of a frameD, comprising, preferably,a base member 12 and an upright member 13,which extends beneath the rack 11. 6o The base memberv 12 is providedwith two holes 30 and 30, Figs. 5 and 6, passing from the front throughto the upright member 13. These holes are made with a narrow opening Eor slot at their tops 3l and 3l, and at the 65 back end of either holeis a small recess 32 and 32a. The upright member 13 is provided "with acurved slot, as shown at 33, and also a stop 34. (See Fig. 5.) The'frameD is usually secured on a plate 14, attached to the up- 7o per surfaceof the frame A of the type-writing machine, and the bed-plate 14 iscarried to the left-hand portion of the said frame of the machine, asshown in Fig. 1. At the left` hand end of the bed-plate 14 aforwardly-ex- 75 tending lug 15 is provided, and a push-rod 16 isloosely passed through this lug.

One end of the push-'rod enters the frame D, while the other or outerend of the pushrod is provided with a suitable knob or han- 8o die 17.A-lug 1S is carried up beyond the inner end portion of the push-rod 16,which lug forms a part of a member 18, (shown in Fig. 7,) and saidmember also serves to pivot the end of the push-rod 16 to a lug 37, Fig.85 8, which extends downward from the under side of a dog 26. Ahorizontal pin 35, Fig. 7, atV an end of the member 18, passes through ahole in the end of the rod 16,which is divided, as at 37, Fig. 4, toreceive the lug 9o 37, Fig. 8. The curved lip 36 of the rod mem ber 18a(shown in Fig. 7) hooks over the pushrod 16, and the said-member 18a isheld in position on the push-rod by the tension of a spring 19. It mayhere be remarked that the spring 19 serves three distinctpurposes, viz:to hold the rod member 13a (shown in Fig. 7) in its place on thepush-rod, to return the rod, and therefore the parts pivotally connectedtherewith, to their normal positions at roo the ends of each operationvof the device, and to exert a downward pressure on the righthand end ofan action-plate 21, to be hereinafter described. The lug 18 is connectedwith one end of the spring 19, which is usually a coil-spring, the outerend of the spring having an attachment to an inwardly-extending lug 2Ofrom the left-hand upper portion,

of the action-plate 21. The action-plate 21 is pivoted near itsleft-hand corner by a pin 22a to the front left-hand portion of the base12 of the frame D of the device in the following manner: The pin 22L hasat its outer end a small stop 38, which when the action-plate is in avertical position, as shown by the dotted lines in Fig. 5, will enterthe slot 31 in the base member 12, allowing the pin 22' to enter thehole 30. Then when the actionplate is brought toits normal position, asin Fig. 1, the stop 38 turns in the recess 32 and holds the pin 22a andthe action plate in place. The action-plateis preferably reduced inwidth in the direction of its inner or righthand end, and in the loweredge of the actionplate, near its inner or right-hand end, twoconnecting-recesses 22 and 23 are produced, as particularly shown inFig. 2 and also in Fig. 9.

A crank-arm 24, Fig. 10, is pivoted at the front edge of the base 12 ofthe frame D of the device in the following manner: A member 22b on thecrank-arm 24, Fig." 10, has at its outer end a small stop`38a, whichwhen the arm 24 is in the position shown by the dotted lines in Fig. 5will enter the slot 31 in the base member 12, allowing the lower member22b of the arm 21 to enter the hole 30'.

'At the same time a second member 39 of the arm 24, which is made longerthan the member 22h, is passed through a hole in the dog 26 and throughthe curved slot 33 in the upright member 13 of the frame D. Then whenthe arm 24C is brought to its normal position, as shown in Fig. 1, thestop 382L turns in the recess 32a'and holds the arm in place, and theend of the member 39 comes to rest in the upper end of the curved slot33. The vertical member of the arm 24 extends out at the rear of theaction-plate and is provided with a pin 25, adapted to enter therecesses 22 and 23 in the action-plate. vThe dog 26 is attached to theupperor horizontal member of the crank-arm 24, and the head of the dog,which is at its forward end, is adapted to enter any one of the spacesbetween the teeth of the rack 11. The dog 26 is provided with a stop 40,Fig. 8, which normally rests against the upright member of the arm 24:.The purpose of this stop is to limit the downward movement of the dogwith reference to the upright member of the arm 24 and hold it in itsproper position and also to transmit the proper motion to the arm 24: onthe return part of the operation.

At cach operation of the device the carriage is moved back one point orthe distance of that the wall of 'this recess will oersufcient Yresistance to the pin to cause the crank-arm to remain stationary untilthe head of the dog 26 is carried upward into the most convenient spacebetween the teeth and the rack 11, which space should be directly overthe head of the dog when the carriage of the machine is at rest. As soonas the head of the dog comes in contact with the rack 1l the arm 24 andthe dog 26 will be moved to the right in consequence of the furthermovement of the rod 16 and the pin 25 will be forced out of the recess22 and into the recess 23. The parts will then be in the position shownin Fig. 3, and the head of the dog will be just over the stop 34E on theupright member 13. The purpose of this stop ris to prevent the head ofthe dog being forced downward and the carriage being moved more than onenotch by a quick or violent operation of the device. When the pressureon the handle 17 is removed, 'the first tendency of the spring 19 is todisengage the head of the dog from the tooth on the rack 11, as the wallof the recess 23 oders a resistance to the pin 25 and the arm 21 will beheld back, and as soon as the dog comes back far enough to pass down bythe stop 31 on the upright member 13 the action of the spring 19 willthrow the head of the dog downward, entirely clear of the rack 11,before any further movement of the arm 24 takes place. However, when thestop 40, Fig. 8, on the dog comes in contact with-the upright part ofthe arm 24: the -pin 25 will be forced out of the recess 23 and backinto the recess 22 by the tension of the spring 19.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. An auxiliary or corrective spacing device fortype-writing machines, comprisinga rack adapted for attachment to thecarriage of the machine, a support, a push-rod having end movement inthe support, a dog mounted toswing up and down and carried by thesupport, the said dog being adapted for engagement with the rack, amember engaging the push-rod and pivotally connecting the dog with saidpush-rod, and a spring connected with said member, the said dog beingraised and lowered by the end movement of said push-rod. v

2. An auxiliary or corrective spacing device for type-writing machines,consisting of a rack arranged for attachment to the scale- IOO IIO

bar of a type-writer, a support arranged for attachment to the frame ofthe type-writer, a spring-controlled push-rod, one end of which moves inthe said support, a crank-arm pivoted in the support, a dog mounted toswing on the crank-arm and arranged for engagement with the rack, and apivotal connection between the push-rod and the dog, as described.

3. In an auxiliary or corrective spacing device for type-writingmachines, the combina-Vv tion, with a rack arranged for attachment tothe scale-bar of a type-writing machine, a support arranged to besecured on the frame of the machine adjacent to the rack, and a platepivoted on the said support and provided with connecting-recesses at itsright-hand end and a spring connection at its left-hand end, of aspring-controlled push-rod held to slide in the frame of the machine,the inner end of which rod enters said support, a crank-arm pivoted onsaid support, a pin carried by the crank-arm and adapted to enter therecessesin said plate, a dog carried by the crank-arm and adapted forengagement with the teeth of the rack, for the purpose set forth, and apivotal connection between the dog andthe push-rod.

4. In an auxiliary or corrective spacing device for type-writingmachines, the combination, with a rack having means for attachment tothe scale-,bar of the machine, a frame having means for attachment tothe main frame of the machine adjacent to the rack, and a plate pivotedto the frame of the device and having connecting-recesses in its loweredge at its right-h and end, of a push-rod having guided movement on theframe of the machine, an end of which rod enters the frame of thedevice, a main crank-arm having one member pivoted to the frame andextending up at the rear of said plate, the other member extendinghorizontally across thc frame of the device, a pin carried by theupright member of the crank-arm, and adapted to enter the recesses inthe said plate, a dog secured to the horizontal member of the maincrank-arm and adapted for engagement with the rack, a projection fromthe lower portion of the dog pivotally connected with the end of thepush-rod, a projection fixed to the upper portion of the inner end ofthe push-rod, and a spring connecting the said projection with the pivotend of the said plate, as 'described.

5. In an auxiliary or corrective spacing device for type-Writingmachines, the combination, with a rack having means for attachment tothe carriage of the machine, a frame having means for attachment to themain frame of the machine and having an upright member, a plate pivotedto the frame of the device in the manner described, a push-rod havingguided movement in the frame of the machine, a main crank-arm pivoted tothe frame in the manner described, and consisting of an upright memberand two horizontal members, the upper one being the longer and passingthrough a curved opening in the back of the frame of the device, a dogsecured to the upper horizontal member of the main crank-arm and havinga projection on its outer side normally in contact with the uprightmember of the main crank-arm, said dog being connected with the push-rodin the manner described, and a pin or stop secured on the upright memberof the frame of the device to hold the dog firmly in position at the endof the forward movement of the dog at each operation of the device.

6. An auxiliary or corrective spacing device for type-Writing machines,comprising a rack adapted for attachment to the carriage of the machine,a frame for attachment to the machine-frame, an arm pivoted to saidframe, a dog pivoted to 'said arm to swing up and down and adapted forengagement with the rack, and a spring-controlled push-rod pivotallyconnected with said dog, substantially as set forth.

7. An auxiliary or corrective spacing device for type-writing machines,comprising a rack adapted for attachment to the carriage of the machine,a frame, a spring-controlled push-rod having end movement in the frame,a pivoted arm carried by the frame, a dog pivoted to said arm andadapted for engagement with the rack the said dog being provided with aprojection normally in contact 'ith the pivoted arm, and an operativeconnection between the push-rod and the said dog, substantially as setforth.

S. An auxiliary or corrective spacing device for type-writing machines,comprising a rack adapted for attachment to the carriage of the machine,a frame for attachment to the frame of the machine, a crank-arm pivotedto the frame, a dog arranged for engagement with the rack and carried bythe crankarm, a plate pivoted to-the said frame and controlling themovement of the said crankarm, a push-rod for actuating the dog, and aspring controlling the said plate and also controlling the push-rod, asset forth.

9. An auxiliary or corrective spacing device for type-writing machines,comprising a rack adapted for attachment to the carriage of the machine,a frame for attachment to the frame of the machine, and having a basemember and an upright member arranged to extend beneath the rack, thesaid upright member being provided with a curved slot and a stop, a dogfor engagement with the rack, a crank-arm pivoted to the base member ofthe frame and having a member extending through a hole in the dog andthrough the curved slot in the upright member of the frame, and aspring-controlled push-rod conected with the dog, substantially asspeci- 10. An auxiliary or corrective spacing device for type-writingmachines, comprising a frame for attachment to the machine-frame,

IOO

IIO

IIS

Y mechanism carried by the frame of the del name to this specication inthe presence of f Vice and adapted when actuated to engage twosubscribing Wilgnesses.

and move the carriage of the machine, means v for actuating saidmechanism, and a pivoted l GAY P' BLEbSING 5 and spring-controlledaction-plate for con- Wibuesses: v y

trolling the movement of said mechanism. FRANK M. BUTTERFIELD,

In testimony-whereof I have signed my1 E. D. BARTHOLF.

